If _ i=1 ¹⁰ x_i=110 and _ i=1 ¹⁰ x_i^2=1540 then what is the variance?

Step-by-step solution

Here, _ i=1 ¹⁰ x i=110 and _ i=1 ¹⁰ x i^2=1540 aligned & Variance = 1 N _ i=1 ¹⁰ x i^2- ( 1 N _ i=1 ¹⁰ x i )^2 & = 1540 10 - ( 110 10 )^2=154-121=33 & variance =33 aligned